2110012211261 has 2 divisors, whose sum is σ = 2110012211262. Its totient is φ = 2110012211260.

The previous prime is 2110012211141. The next prime is 2110012211299. The reversal of 2110012211261 is 1621122100112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2076913322500 + 33098888761 = 1441150^2 + 181931^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2110012211261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2110012211861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055006105630 + 1055006105631.

It is an arithmetic number, because the mean of its divisors is an integer number (1055006105631).

Almost surely, 2^{2110012211261} is an apocalyptic number.

It is an amenable number.

2110012211261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2110012211261 is an equidigital number, since it uses as much as digits as its factorization.

2110012211261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 2110012211261 its reverse (1621122100112), we get a palindrome (3731134311373).

The spelling of 2110012211261 in words is "two trillion, one hundred ten billion, twelve million, two hundred eleven thousand, two hundred sixty-one".